Just before the summer holiday, while his classmate is excited to have a girlfriend, Tomorou has none. He is smart and handsome but lacks something. He has an old friend, Chiharu, but he isn't interested in her. One day, Chiharu's mother asks Tomorou to hand over a shopping list memo to Chiharu because she left it at home. After school, he goes to her classroom but Chiharu isn't there. According to her classmate, she is on the roof. He goes there and see Chiharu having sex with other students. Chiharu invites Tomorou to join them, and so his sex life starts... [Edited from Himeya Shop]
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| Name | Characters | Importance | Weight |
|---|---|---|---|
| Sex with Others Engages in (Sexual) | 5 | 1.99 | 3.56 |
| Casual Sex Engages in (Sexual) | 3 | 2.45 | 3.39 |
| Off Screen Sex (obsolete) Engages in (Sexual) | 3 | 2.34 | 3.24 |
| Kid Body | 9 | 1.37 | 3.15 |
| New Type School Swimsuit Clothes | 2 | 2.52 | 2.77 |
| Group Sex Engages in (Sexual) | 5 | 1.49 | 2.67 |
| String Ribbon Tie Clothes | 3 | 1.82 | 2.52 |
| Sex in Public Places Engages in (Sexual) | 6 | 1.26 | 2.45 |
| Promiscuous Personality | 2 | 2.22 | 2.44 |
| School Swimming Club President Role | 1 | 3.47 | 2.40 |
| Voyeurism Engages in (Sexual) | 2 | 2.15 | 2.36 |
| Black Eyes | 4 | 1.42 | 2.29 |
| Pleated Skirt Clothes | 4 | 1.41 | 2.26 |
| Sex in a Vehicle Engages in (Sexual) | 2 | 2.04 | 2.24 |
| Naked Clothes | 2 | 1.95 | 2.14 |
| Library Committee Member Role | 1 | 2.92 | 2.03 |
| Sitting Sex Engages in (Sexual) | 2 | 1.83 | 2.01 |
| Handjob Subject of (Sexual) | 2 | 1.75 | 1.93 |
| Missionary Engages in (Sexual) | 2 | 1.74 | 1.91 |
| PE Teacher Role | 1 | 2.75 | 1.90 |
| Brown Eyes | 7 | 0.90 | 1.88 |
| Parted in Middle Hair | 3 | 1.25 | 1.74 |
| Sex with Children Engages in (Sexual) | 1 | 2.49 | 1.73 |
| Consensual Group Sex of One Female and Several Males Engages in (Sexual) | 1 | 2.49 | 1.73 |
| Classmate Role | 3 | 1.23 | 1.70 |
| Masturbation with Object Engages in (Sexual) | 1 | 2.44 | 1.69 |
| Blowjob Subject of (Sexual) | 2 | 1.52 | 1.68 |
| Sex in Front of an Audience Engages in (Sexual) | 2 | 1.50 | 1.65 |
| Reverse Missionary Engages in (Sexual) | 1 | 2.36 | 1.64 |
| Ball-cupping Engages in (Sexual) | 1 | 2.34 | 1.62 |
| Outdoor Sex Engages in (Sexual) | 3 | 1.16 | 1.60 |
| Class President Role | 1 | 2.28 | 1.58 |
| Not a Virgin Role | 2 | 1.43 | 1.57 |
| Tanline Body | 1 | 2.26 | 1.57 |
| Loner Personality | 1 | 2.26 | 1.57 |
| Hair Tie Clothes | 2 | 1.41 | 1.54 |
| Reverse Cowgirl Engages in (Sexual) | 1 | 2.23 | 1.54 |
| Micro Bikini Clothes | 1 | 2.22 | 1.54 |
| Tareme Eyes | 3 | 1.10 | 1.52 |
| Seduction Engages in | 1 | 2.18 | 1.51 |
| T-shirt Clothes | 2 | 1.32 | 1.45 |
| Freckles Body | 1 | 2.06 | 1.43 |
| Brown Hair | 7 | 0.68 | 1.42 |
| Butterfly Engages in (Sexual) | 1 | 2.03 | 1.40 |
| Transfer Student Role | 1 | 2.02 | 1.40 |
| Neighbor Role | 1 | 2.00 | 1.39 |
| Slim Body | 10 | 0.58 | 1.38 |
| Voyeurism Subject of | 1 | 1.97 | 1.37 |
| Vaginal Gaping Engages in (Sexual) | 1 | 1.95 | 1.35 |
| Assertive Personality | 1 | 1.94 | 1.35 |
| Antenna Hair | 1 | 1.92 | 1.33 |
| Group Sex of Multiple Females and Males Engages in (Sexual) | 1 | 1.91 | 1.33 |
| Friend Role | 2 | 1.20 | 1.32 |
| Masturbation in front of an Audience Engages in (Sexual) | 1 | 1.90 | 1.32 |
| Quickie Fix Engages in (Sexual) | 1 | 1.89 | 1.31 |
| Standing Sex Engages in (Sexual) | 1 | 1.87 | 1.30 |
| Black Hair | 4 | 0.81 | 1.30 |
| Timid Personality | 1 | 1.86 | 1.29 |
| Butterfly Subject of (Sexual) | 2 | 1.17 | 1.29 |
| Doggy Style Subject of (Sexual) | 3 | 0.92 | 1.28 |
| Handjob Engages in (Sexual) | 2 | 1.16 | 1.27 |
| Boku Personality | 1 | 1.78 | 1.24 |
| Missionary Subject of (Sexual) | 2 | 1.11 | 1.22 |
| Anal Sex Engages in (Sexual) | 1 | 1.77 | 1.22 |
| Side Tail Hair | 1 | 1.74 | 1.21 |
| Reverse Missionary Subject of (Sexual) | 1 | 1.73 | 1.20 |
| Sports Shoes Clothes | 1 | 1.73 | 1.20 |
| Cowgirl Engages in (Sexual) | 1 | 1.72 | 1.19 |
| Reserved Personality | 1 | 1.72 | 1.19 |
| Quickie Fix Subject of (Sexual) | 2 | 1.08 | 1.19 |
| Vaginal Fingering Subject of (Sexual) | 2 | 1.08 | 1.18 |
| Vaginal/Anal Sexual Toys Subject of (Sexual) | 1 | 1.71 | 1.18 |
| Nipple Sucking Engages in (Sexual) | 1 | 1.71 | 1.18 |
| Short Hair | 6 | 0.61 | 1.18 |
| Doggy Style Engages in (Sexual) | 1 | 1.69 | 1.17 |
| Parted to Side Hair | 2 | 1.06 | 1.16 |
| Sweater Clothes | 1 | 1.64 | 1.13 |
| Popular Role | 1 | 1.63 | 1.13 |
| Sex in Classroom Engages in (Sexual) | 1 | 1.61 | 1.11 |
| Nipple Teasing Subject of (Sexual) | 1 | 1.58 | 1.10 |
| Sex in Water Engages in (Sexual) | 1 | 1.56 | 1.08 |
| Cunnilingus Engages in (Sexual) | 1 | 1.56 | 1.08 |
| Sidehair Hair | 2 | 0.98 | 1.07 |
| Cowgirl Subject of (Sexual) | 2 | 0.95 | 1.05 |
| Student Role | 1 | 1.48 | 1.03 |
| Blunt Bangs Hair | 1 | 1.40 | 0.97 |
| Hairpin Clothes | 1 | 1.40 | 0.97 |
| Masturbation Engages in (Sexual) | 1 | 1.38 | 0.96 |
| Female Ejaculation Engages in (Sexual) | 1 | 1.37 | 0.95 |
| Wavy Hair | 1 | 1.36 | 0.94 |
| Virgin Sex Engages in (Sexual) | 2 | 0.85 | 0.93 |
| Watashi Personality | 1 | 1.26 | 0.87 |
| Childhood Friend Role | 1 | 1.25 | 0.87 |
| Pale Body | 9 | 0.37 | 0.85 |
| Friendly Personality | 1 | 1.22 | 0.85 |
| Blowjob Engages in (Sexual) | 2 | 0.76 | 0.84 |
| Long Hair | 2 | 0.75 | 0.83 |
| Anal Sex Subject of (Sexual) | 1 | 1.19 | 0.82 |
| Standing Sex Subject of (Sexual) | 1 | 1.18 | 0.82 |
| Cunnilingus Subject of (Sexual) | 1 | 1.17 | 0.81 |
| Twin Tails Hair | 1 | 1.13 | 0.78 |
| Ponytail Hair | 1 | 1.10 | 0.76 |
| Glasses Clothes | 1 | 1.08 | 0.75 |
| Sitting Sex Subject of (Sexual) | 1 | 1.06 | 0.73 |
| Thigh-high Stockings Clothes | 1 | 1.04 | 0.72 |
| Kind Personality | 1 | 1.03 | 0.71 |
| Spiky Bangs Hair | 1 | 1.00 | 0.70 |
| Shoulder-length Hair | 1 | 0.92 | 0.64 |
| Young-adult Body | 1 | 0.77 | 0.53 |
| Teen Body | 1 | 0.62 | 0.43 |